Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)Three new river otters are seen in their exhibit at the Oakland Zoo in this photo released on Tuesday, May 9, 2017. (Photos by Oakland Zoo)OAKLAND, Calif. (KGO) -- This Mother's Day will be extra special at the Oakland Zoo. Three new river otter pups are now on exhibit.Click here for the full story.